Muff



FIG. 1 is a top plan view of a muff showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a perspective view as seen when worn;

FIG. 4 is an end elevational view the opposite end being a mirror imagethereof; and

FIG. 5 is a front elevational view the rear view being a mirror imagethereof.

The ornamental design for a muff, as shown and described.